---
title: "CALC CO LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/6100f421-62fd-5cbb-99fc-2e59f50cc021
json: https://whiteintel.dev/api/public/dossier/6100f421-62fd-5cbb-99fc-2e59f50cc021
identifier: oo:GB-COH-05678559
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# CALC CO LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-05678559`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/6100f421-62fd-5cbb-99fc-2e59f50cc021  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/6100f421-62fd-5cbb-99fc-2e59f50cc021  

## Ownership & control

### Owners / controllers

- **Mr James Boon Piang Lim** (beneficial owner) — 50% — https://whiteintel.dev/entity/8f044398-457a-5a3c-a926-1945a1d59f63
- **Mr Jiri Mares** (beneficial owner) — 50% — https://whiteintel.dev/entity/f3b83b1a-08fa-5bd7-a750-5c95a1b16164
- **Mr Jiri Mares** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/19522a73-22a8-4265-94b2-becea2655836
- **Mr James Boon Piang Lim** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/bfc1d19b-dd01-489d-a2d7-d4598d8fef3e

### UBO chain (walk to the ultimate owner)

1. **Mr James Boon Piang Lim** — beneficial owner 50% → *CALC CO LTD*
1. **Mr Jiri Mares** — beneficial owner 50% → *CALC CO LTD*
1. **Mr Jiri Mares** — beneficial owner 37.5% → *CALC CO LTD*
1. **Mr James Boon Piang Lim** — beneficial owner 37.5% → *CALC CO LTD*

## Company profile (live · UK Companies House)

- **Company number:** `05678559`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2006-01-17
- **Registered office:** Winton House, Winton Square, Basingstoke, Hampshire, RG21 8EN, England
- **SIC:** 62090

### Officers

- LIM, James Boon Piang — secretary · British · appointed 2006-01-17
- LIM, James Boon Piang — director · British · appointed 2006-01-17
- MARES, Jiri — director · Czech · appointed 2023-11-20
- MARES, Jiri — director · Czech · appointed 2006-01-17 · resigned 2009-01-31

### Beneficial owners (Persons with Significant Control)

- Mr Jiri Mares — 25–50% shares · individual PSC · Czech Republic — since 2023-12-11
- Mr James Boon Piang Lim — 25–50% shares · individual PSC · England — since 2016-06-30

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/05678559
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/05678559

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **CALC CO LTD**. Human view: https://whiteintel.dev/entity/6100f421-62fd-5cbb-99fc-2e59f50cc021 · Structured JSON: https://whiteintel.dev/api/public/dossier/6100f421-62fd-5cbb-99fc-2e59f50cc021._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._